This is another experiment in ultra light elements that still serve a functional purpose. In this case, a vanity light for a small powder room.

The cantilevered light bar houses a LynkLabs 12w Tesla SnapBrite strip, while the wall box cover houses a BriteDriver power supply. The reflector elements are covered with White Optics material to optimize light from the LED strip and to diffuse the light throughout the room.

This replaced a 150W Halogen indirect reflector product, yet delivers roughly the same light into the space, saving a great deal of energy and the hassle of replacing the constantly failing halogen lamps.

One compromise I had to make here was the size of the wall plate. I would have liked it to be much smaller. However, in the application destination I needed it to fill, there was an existing wall condition and junction box configuration that required a 5″ square wall plate to cover. Ideally, I would have used a small vertical outlet box, with concealed fasteners… but practical reality sometimes demands these little sacrifices.

More at Lumenique 52 in 52 – Design 37

Comments
  1. Kevin,
    Of all your unique designs so far this year, this is my favorite.

    I am also working on a design with diffuse reflectance and I would like to hear your thoughts on the White Optics material.

    Chris Isaacson

    • kwillmorth says:

      I have always found the problem of finishing the exterior of a product one color while having a highly reflective section another a challenge. While masking and multiple trips through finishing is an option, its also time consuming, and frequently not practical. When using plastics that will not be painted, the issue is even more problematic.

      Meanwhile, while specular materials are everywhere, diffuse white surfaces are less easily resolved. Paint is okay, but gaining 90+% reflectivity and a diffuse surface is difficult if not impossible. White Optics material resolves this. It can be adhesive backed to apply to a product directly, or it can be set into a housing and clipped or tabbed in place. It’s also thermally formable, so making cups or other shapes is a fairly simple procedure with low cost vacuum forming equipment.

      There are other materials with very similar properties, from Dupont and Gore, but the White Optics is by far the best value all around. It has the reflective properties of the inside an integrating sphere, at a fraction the cost of labor intensive paint/mask/pain processes, and is easy to work with.

      That said, be careful of exposed (direct view) surfaces. With very high reflective surfaces with diffuse properties, the brightness can be surprising. I tend to limit the directly viewed surfaces to lower power products, say under 800 lumens / sq. ft. at distances between source and reflector of +/- 4″. Anything closer than this, or brighter, and the white reflective surface becomes too bright for comfort in spaces where there is little ambient light otherwise.

  2. Kevin, thanks for your thorough insights. This is very useful information to us. I hope to meet with you at the DOE conference in San Diego.

    Chris

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